Clump

I've run the narrow passage Crossed every grinning hill Once a world that I could bear I've been here for a while For a while For a while The tracks feel too familiar All seams have been retraced You can't outrun what's in you You've been here for a while For a while For a while You drag on for ages While the air stands still This isn't for you One day you'll leave us That much I'm sure But take your time and Someone could get hurt Saw a clump growing right beneath me It's spread everywhere I've paced If I don't slash the threads I'll be here for a while For a while For a while